Walter is a U.S. Air Force veteran and attended the University of Wisconsin before beginning his civilian career. He initially worked as a field service engineer at Eaton Corporation. There, he also served as senior engineer, Application Engineering. In 1998, he joined ABB. He has held multiple positions, including field service manager, product specialist, and product manager. He is currently a market manager, HVAC and an ASHRAE member. His areas of experience include AC drives, HVAC drive applications, power quality, and ancillary drive application topics including harmonics, EMC, and short circuit ratings.
You went with VFDs to save money. That's great. But if you're letting even 10% of those drives operate in bypass mode on an ongoing basis, then you could be using up to 56% more energy. Here are four steps to protecting your air-handling investment and your bottom line.
Leaning on experience and data from various K-12 cities and projects, the author pursues some less conventional design approaches. They may revolve around radiant heating and/or cooling, but depending on school size and other factors, the smart use of heat recovery, DOAS, and improved central plants could also put a project on the HVAC honor roll.